How do we analyze movement? FMS and Y-Balance are among some of the more popular screening tools. McGill et al published an interesting study that brings up some food for thought.....
- We often evaluate using body weight functional tasks (squats, gait, SL squat, functional reach, etc). Do we need to add more load and/or speed to see how movement changes? (we do this with scapular movement by adding weight) Granted, often our patients come to us after injury and this study was using healthy individuals but it begs the question: Is our movement assessment lacking if we do not induce a load and/or change of speed upon the movement?
- What about return to sport? Should we train our athletes with a weighted vest for agility and jumping tasks? It would be a relatively cheap investment in a clinic.
- This study shows some movement adaptations when load and speed are induced. Intuitively, we know this and train for this in some ways even if its not agility or jumping. Do we not induce load for training if they are in some pain? My thoughts are that our athletes go through some pain regardless during seasons, etc, so why not? Now, that being said- we don't want to encourage or strengthen in a dysfunctional position/compensation due to pain, but are we doing a disservice to our athletes if we do not prepare them for that external load they are going to get in a game anyway? Lastly, if we do decide to re-train them with increased load or increased speed (since this study shows different movement adaptations for both), how do we cue? Similar to how we may cue our throwing athletes, throwing "hard" vs increasing throwing distance and having them throw may change their respective velocities depending on the type of cue.
I think we need to really consider load and speed a little more with our screenings, evaluations, and return to sport testing/training.
Mcgill S et al. The influence of load and speed on individuals’ movement behavior. Journal of Strength & Conditioning. October 2013.